Carbureter.



H. B. WYMAN.

OARBURETER.

APPLIOATION'IILED DEC. 6, 1912.

Patented Apr. 21, 191i a nueuto'c HELJyman.

im]; sures- ATENT causes. I

. I HORACE B. WYMAN, OF HOUSTON, TEXAS.

cennunnrna weasel.

Application filed December 6, 1912. Serialllo. 785,309.

To all it may concern Be it known that l, Homes B. "WYMAN, a citizen of the United States, residing at Houston, in the county of Harris and State of Texas, have inventedcertain new anduseful improvements in Carbureters, of which the following is a specification.

My invention relates to new and useful im rovernents in carbureters.

n important object of this invention is to provides device of the above mentioned character, which is simple in construction, automatic in operation, durable, and readily adjustable so that the same may be used in connection with diiierent engines, or upon the same engine operating under different conditions.- M

Other objects and advantages of this invention will be apparent during the course.

of the following description. 7

In the accompanying drawings forming a part of this application and in which like numerals are employed to designate like vparts throughout the same, Figure l is a central vertical sectional view through the complete carburetor, and, Fig.2 is a horizontal sectional view taken on line 2-2 of Fig. l

and looking downwardly as indicated by the sential and it is to be understood that the invention is not solely restricted to such shape orconstruction.

Disposed near the lower end. of the main shell or casin 3 and to one side of the same,

is a verticalruel holding tank orreceptacle 4, having preferably both ends thereof closed, as showrn This tank 4 may be preferably cast integral with the main shell or casing 0r rigidly connected therewith by suitable means. The fiuid fuel, such as gasolene or the like, is supplied into the lower end of the fuel holding tank 4 through a nip- Spectfication 0t Letters Patent.

The main,

amount of air. provided with a plurality of lateral y es 'tendinghorizcntal pockets o:- chamhers l9 Patented Apr. 21, 193.4.

pie or couplingS, to be suitably connect/ed with'a fuel supply pipe (not shown).

Disposed within the fuel holding tarlr 4; is a vertlcally movable float 6, carried by a rod 7. The. 11 per end of the rod 7 operates within a musing '8, while the lower end thereof operates through an a ertured boss 9, as shown. The diameter 0 the opening in the boss 9 is ranch larger than the diameter of the rod 7 whereby the gasolene or the like can freely pass through such opening and about the rod 7. The rod i carries at its lower end a valve-10, which is seated upon upward movement thereof against a valve seat 11. It is thus seen that when a certain. amount or gasolene' or other fluid fuel is fed into the tank l, the float Swill be elevated which causes the valve '16 to be s eeped and cut off the further supply of the me Leading into is a discharge pipe 12, carrying at its free end an upstanding fuel nozzle or discharge device 13. This nozzle 13 is preferably arranged centrally within the lower tapered or conical portion of the ,main shell or casing 3, with the upper end thereof disposed above the highest possible level of the gasol ene or fuel'in the tank 4, as shown. The nozzle 13 is preferably provided at the upper end thereof with a conical. discharge opening 14, which is adaptedto be partially or completely closed by the upper end of a needle valve 15, carrying a wheel or nut 16 at the lower end thereof. At this point it may be, well to mention the fact that by having'thelower portion of, the main shell or casing tapered or conical andinoreasing in diameter downwardly, the stream of air being drawn into the main shell or casing,

will accordingly be deflected inwardly pass near-to or about thenozzle 1- Mounted within the contracted portion of the main shell or casing 3 is a. valve struc ture, preferably in the form of a plurality of swinging valves 1'3, provided centrally thereof with an opening or openings 18,. which receive the nozzle 13 centrally within the same, as shown. The opening 18 pro- Fil . so the inner side of the tank vides a permanent passage for the minimum The shell or casin 8 is and 20, as shown. The valves 1.? have their reduced ends 20, extendinginto the pocket 2t), and are pivotally mounted upon fixed pins or bolts 21, as shown. A suitably stifi' C-shaped spring 22, engages these ends 20 and serves to force the valves inwardly,

toward each other. When the valves 17 are swung outwardly or away from each other, they inove into the oppositely arranged pockets or chan'ibers 19, as is obvious.

The numeral 23 designates the contracted opening of the main shell or casing 3, which occurs at the contracted portion of the shell or casing. 1

Between the reduced ends 30 of the valve 17, is an opening 94, within which is disposed a lower end of a suunging operating lever 25, such lower end being preierably provided with an enlargement or ball 26, as shown. It is obvious that when the ball 26 is moved toward the pivot points 21, the valves 17 will be moved away from each other, thus increasing the cross sectional area of the opening 18. This open-ting lever 25 is pivotally mounted upon a supporting rod 27, which is preferably longitudinally movable or adjustable for the purpose of shifting the pivot point thereof. Any suitable means inay be employed to longitudinally move or adjust the supporting rod 27. The rod 27 is longitudinally adjustable by providing the same with screw-threads, which engage within a screw-threaded opening in the shell 3, as shown; Ahead 31 is freely swiveled upon the inner end of the rod 27 and has pivotal connection with the lever 25, as shown at 28.

The numeral 29 designates alocking nut employed to hold the rod 7 in adjustment at different positions.

Formed upon the upper portion of the main shell or casing is a laterally extending pret'eral'ily substantially horizontal cylinder 33, having its outer end closed by a perforated cap 34, as shown. Mounted to reciprocate within the cylinder 33 is a piston 35, having connection with a rod 36 which has its inner e ld pivotally connected with the upper end of the lever .25, as shown. The inward longitudinal inoven'ient of the rod 36 is opposed by a suitably stifl' coil spring 37, confined between the cap 34' and an apertured plate 238, which is carried by the rod 36. An adjusting nut 25!) is mounted upon the screwthreaded end of the rod 34, and engages the apertured plate 3F, whereby the tension of the spring 37 may be changed by proper manipulation ot this nut.

Mounted through theupper-portion of the main shell or casing is a 'n'eterably horizontally arranged rock-shaft 40. carrying a throttle valve or damper ll, which is circular as is customary. The rock-shaft 40 is turned by a brank 42 carried by the outer end thereof. I

The operation of the carburetor is as follows: .xssuiniiig that the engine is running and the valve 41 is partially opened, there will be a suction within the main shell or casing, to draw air upwardly through the same. This air is first deflected inwardly to pass through the openinglS in close proximity to and about the fuel discharging nozzle 13. This air gathers up the gasolene or other fuel held within the nozzle 13, atoIn-' izing or vaporizing thesame. As the air and gasolene travel into the upper portion of the main shell or casing, the mixture is allowed to expand due to the increasing in diameter upwardly of the main shell or casing, thus enabling the atomized or vaporized gasolene to become thoroughly mixed with the air. This carbureted air or charge is drawn into or fed to the cylinders of the engine. Upon further opening the throttle valve 41, the speed of the engine is increased, with a corresponding increase of suction or vacuum within the main shell or casing 3. U 0n the increase of the suction or vacuum wit in the main shell or casing, the piston 37 is moved inwardly, swinging the upper'end of the operating lever inwardly, whereby the valves 17 are swung apart or away from each other, to increase the size of the opening 18, whereby an increased amount of air is admitted into the main shell or casing.

It is to be understood that the form of m invention herewith shown and described, is to be taken as a preferred example of the same, and that certain'chal'iges in the shape, size and arrangement of parts me be resorted to without departing from t e spirit of the invention or the scope of the-subjomed claims.

Having I claim:

I. In a earhureter of the character dethus fully described my invention,

seribed, a main shell, a pair of pivoted valves disposed therein and provided with a permanent air supply open ng or openings, at pivoted lever having its lower end operating between portions of the pair of valves to move the same away from each other when the lever is swung in one direction, a cylinder comiected with the main shell, a piston mounted to operate within the cylinder, connecting means between the piston and level-L and a fluid fuel discharging nozzle disposed in the main shell.

2. In a carbureter of the character described, a main shell, means operated by suction in the main shell, a vertically swinging lever connected with the means, a horizontally adjustable support for the lever and with which the same is pivotally connected, a movable valve mounted within the main shell and operated upon the movement of the lever, and a fluid discharging nozzle disposed within the main shell in co'operative relation to the valve.

3. In a carburetor of the character described, a main shell providedbetween its I jacent edges with ofieningeforming a permaends with laterally extending oppositely armunica tion therewith; "a pi slion operating ranged horizontal chambers, horizontal pivoted valves mounted within the horizontal chambers and provided upon their inner adne'nrand below the valves. ne'nt air passagew en the valves are closed, nspring to move, the valves in'wardly, an upsthnding pivoted lever having its'lowerend operating in engagement with portio ff the valves to move the same, a c lin j nected with the main shel l jsifif gn" p T in presence ofiwo witnesses. V v HORACEB. WYMA'N. "'Witnesses: e

' #Enm G. LEE,

TGAH; WILSON.

within the cylinder, 'conn'ect ing means between the piston and upstanding pivoted 19-- ver, and a liquid fuel supply device disposed In testimony whereof-I afiixmy signature- 

